So I've scoured the internet and I can't find this issue anywhere else so I'm hoping one of you stereo guru's can help me. I've got a 2000 SSEI with the Bose system and I'm just trying to put a cheap Pioneer deck in there 'cuz the stock one finally ate my cassette adapter. If it matters, the stereo is a Pioneer DEH-2200ub that works fine. I just pulled it out of my other car.

I got the Metra GMOS-09 adapter and followed all of the instructions. I've done a bunch of stereo installs before so I'm not completely new to this. I cut and taped off the brown wire for the Onstar system. I cut and taped off that other wire that it says to cut for 00 and 01 vehicles. I put it in the car and it's powering up the amp fine, but the rear speakers seem to be cutting out the front ones.

With all of the speakers plugged in (RCA connections from stereo to adapter) when I first turn the stereo on, the front speakers fade in, get REALLY loud, and then completely cut out, and the rear speakers sound fine playing at a regular volume. If I disconnect the rear speakers, the front ones come back on and they sound fine too, playing at a regular volume. But when I plug the rears back in again, the fronts cut out completely. I can't get all of the front and rear speakers to work at the same time.

Also, I don't know if this matters but I'm still waiting for my radio antenna adapter to show up so I'm not connecting the antenna at all. Not sure if that somehow provides another needed ground or something like that...

Anyone have any thoughts?

What kind of adapter are you using for the RCAs? That's where I would start...

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*Chris*

2006 Grand Prix GXP, Blue Green Crystal, 108K
Previous, 07 GP SE, 97 SSE 40th, 93 SLE, 90 LeSabre

I don't have any RCA adapter. I didn't realize the GMOS-09 was going to have 4 male RCA connectors. I was expecting bare wires to splice together for the speakers. I just went to Radio Shack and picked up 4 female connectors, wired them up and plugged it all together.

I see what you're talking about. I need (I'm guessing) a 4-channel high to low RCA converter? Any recommendations? Is a 60 watt ok?

Hmm, now I'm not sure. Hopefully someone with more knowledge than me will chime it...

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*Chris*

2006 Grand Prix GXP, Blue Green Crystal, 108K
Previous, 07 GP SE, 97 SSE 40th, 93 SLE, 90 LeSabre

ok, so you have the speaker outputs from the deck spliced into a RCA connection that connects to the GMOS9? money says that is where the problem lies.. you need a converter to convert to hi level outputs to low level outputs. Monster converter is nice but not cheap... there are a few on amazon that work well that are better. dont use the POS schosche from walmart... get the converter and i bet your are golden.

Metra 4 channel converter
http://www.amazon.com/Metra-AX-ALOC648- ... 019&sr=8-1

Pac 4 channel converter:
http://www.amazon.com/PAC-SOEM-4-4-Chan ... 050&sr=8-6

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Shane "RedZMonte"
2004 Z16 Z06: Virgin
2000 SSEi: Kenwood DDX512, 3.25" MPS, ZZP DP, PLog, Puck Mount, NGK TR7's, DHP Tuned
1995 Monte Z34: T04e "60" turbo, 42.5# injectors, Borla Catback, OBDII swap, DHP Tuned, Much more...